<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<body>
<div id="app">
  {{message}}
</div>
<template id="cpn">
  <div>
    <h2></h2>
  </div>
</template>
  <script src="../js/vue.js"></script>
  <script>
    const cpn = {
      template:'#cpn',
      props:{

      }
    }
    const app = new Vue({
      el:'#app',
      data:{
        message:"你好啊！！"
      }
    })
  </script>
</body>
</html>